Conical Pendulum
A conical pendulum consists of a weight (or bob) fixed on the end of a string or rod suspended from a pivot. Its construction is similar to an ordinary pendulum; however, instead of swinging back and forth, the bob of a conical pendulum moves at a constant speed in a circle with the string (or rod) tracing out a cone
\[The \: Period\: of \: a\: conical \: pendulum (T) =2 \pi \sqrt{\frac{lcos \theta}{g} } \]
where
l is the length of the pendulum
g is acceleration due to gravity
Half angle of the conical pendulum
